Mold for plastic substances, for instance, chocolate



May 19, 1931. J. J. JENSEN 1,806,017

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J J. Jensen Patented May 19, 1931 UNITED STATES PATENT FFICE JENS JOHANNES JENSEN, OF COPENHAGEN, DENMARK, ASSIGNOR TD IMES$RS. BOGGILI) & JACOBSEN, OF COPENHAGEN, DENMARK MOLD FOR PLASTIC SUBSTANCES, FOR IN STANCE, CHOCOLATE Application filed March 26, 1930, Serial No. 439,154, and in Germany April 8, 1929.

The present invention relates to improvements in mold plates, especially for casting chocolate and other plastic masses. Such molds consist which the bottom mold is formed by stamp ing, a corresponding top mold being also provided, either one mold for each bottom mold of the mold plate, or so that the top mold plates and the bottom mold plates are alike. These molds, however, are subject to the drawback that the formation of fins or burrs on the cast articles cannot be avoided at the joints, and when the bottom molds are somewhatworn they are at the same time so uneven that it will be impossible, even by using loose top molds, to attain a tight fit between the top molds and the bottom molds.

The object of the present invention is to remove this drawback.

The principal idea underlying the invention is that each bottom mold in the mold plate or mold frame has a projection fitting into a corresponding recess milled into each individual top mold, each top mold being pressed resiliently against the corresponding bottom mold, so that the two mold parts will fit tightly together in spite of the fact that the bottom mold plate or the rails supporting the bottom molds may be dented or bent, so that all the top edges of the molds will not lie in the same plane.

One construction of the invention is illustrated by way of example on the drawings.

Fig. 1 shows, in top view, a bottom-mold frame,

Fig. 2 the same frame in side elevation,

Fig. 3 shows, in top view, a top mold, and

Fig. 4 an end view of the same.

According to the drawings, the bottom mold frame 1 consists of a frame containing one or more rows of bottom molds 2. The top edges of these molds are milled. The molds 2 are mounted on one or more transverse rails 3, but may also as usual be disposed in a metal plate or the like. The top molds 4 correspond to the bottom molds and are joined together by means of a common central rail 5, from which rail transverse springs 6 extend to each individual top mold 4. The bottom mold is fitted with a hook 7 as a rule of sheet metal in with handle, which hook is maintained in its bottom position by a powerful spring 8. lVhen the bottom molds 2 have been charged, the corresponding top-mold frame is placed on top, so that each individual top mold fits against the corresponding bottom mold, there being perhaps provided suitable guiding arms 9 for the purpose of securing a tight fit between the molds. Then the spring hook 7 has to be lifted over the rail 5 of the bottom molds, so that all the top molds will be pressed down against the corresponding bottom molds. In consequence of the special arrangement of the top molds the latter will fit tightly against the bottom molds, even when the top edges of the latter do not lie in one and the'same' plane.

It is evident that the system of rails 5 and springs 6 of the top molds may vary all depending on the number and size of the top molds, and for larger molds there may of course be used more than one spring 6 on one and the same top mold.

Patent claims:

1. A mold of the class described, comprising a plurality of upper and lower mold sections, a rail having spring arms carried thereby, said arms engaging the upper mold sections, a frame supporting the lower sections, a spring restrained hook carried by the frame adapted to yieldably engage said rail to hold the edges of the respective mold sections in yielding engagement.

2. A mold of the class described, comprising upper and lower mold sections, a frame supporting the lower sections, a rail, spring arms carried by the rail and having their outer ends engaged with the upper mold sections, the lower sections having a plurality of upwardly and outwardly inclined projections upon their edges for guiding the edges of the upper sections for engagement with the edges of the lower sections, and a spring restrained hook slidably associated with the frame for engaging the rail to yieldably hold the edges of the respective sections in yielding contact.

In testimony whereof I affix my signature.

J ENS J OHANNES JENSEN. 

